Hiromi Tajiri

Title: Hiromi Tajiri: Innovator in Metal Strip Welding Technology

Introduction

Hiromi Tajiri is a notable inventor based in Hyogo, Japan. She has made significant contributions to the field of welding technology, particularly in methods for connecting metal strips. With a total of 4 patents to her name, her work has advanced the efficiency and quality of welding processes.

Latest Patents

One of her latest patents is a method of and apparatus for connecting metal strips. This innovative method involves welding the tail end of a preceding metal strip to the forward end of a succeeding metal strip. The process includes cutting the tail and forward end portions of the two strips to required sizes using cutting means mounted on frames. These frames are secured to tables equipped with clampers and are movable along a passage extending laterally across the strips. The cut end faces are then butted against each other and welded using either flash welding or laser beam welding, depending on the material of the strips. The flash welding is achieved by supplying a flash current between the clampers, while the laser beam welding utilizes a machining head mounted on one of the tables. Additionally, beads produced by the welding process are removed by bead removing means that are also movable along the passage.

Another significant patent is a seam welding machine designed to produce a uniform welding bead quality along the seams of cylindrical articles, such as cans. This machine utilizes full-wave rectified commercial AC power, which is passed through an inverter to generate a high-frequency AC output current. The current is then applied through a center-tapped secondary transformer to a rectifier circuit, followed by a smoothing circuit composed of a reactor and a capacitor, ultimately reaching a pair of rotary electrodes. A detector senses when the end portions of the articles to be welded approach the electrodes and adjusts the AC power source to reduce the welding current during this critical moment.

Career Highlights

Throughout her career, Hiromi Tajiri has worked with prominent companies, including Mitsubishi Electric Corporation and Nippon Steel Corporation. Her experience in these organizations has allowed her to refine her skills and contribute to significant advancements in welding technology.

Collaborations

Hiromi has collaborated with notable coworkers, including Akiyoshi Uomoti and Nobuyoshi Nakatani. These partnerships have fostered innovation and the sharing of ideas within the field.

Conclusion

Hirom